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Articles 61 - 61 of 61
Full-Text Articles in Chemicals and Drugs
The Endogenous Cannabinoid Anandamide Inhibits Cromakalim-Activated K+ Currents In Follicle-Enclosed Xenopus Oocytes, Murat Oz, Keun-Hang Susan Yang, Meral Dinc, Toni S. Shippenberg
The Endogenous Cannabinoid Anandamide Inhibits Cromakalim-Activated K+ Currents In Follicle-Enclosed Xenopus Oocytes, Murat Oz, Keun-Hang Susan Yang, Meral Dinc, Toni S. Shippenberg
Mathematics, Physics, and Computer Science Faculty Articles and Research
The effect of the endogenous cannabinoid anandamide on K+ currents activated by the ATP-sensitive potassium (KATP) channel opener cromakalim was investigated in follicle-enclosed Xenopus oocytes using the two-electrode voltage-clamp technique. Anandamide (1–90 μM) reversibly inhibited cromakalim-induced K+ currents, with an IC50 value of 8.1 ± 2 μM. Inhibition was noncompetitive and independent of membrane potential. Coapplication of anandamide with the cannabinoid type 1 (CB1) receptor antagonist N-(piperidin-1-yl)-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboximide hydrochloride (SR 141716A) (1 μM), the CB2 receptor antagonist N-[(1S)endo-1,3,3-trimethyl bicyclo heptan-2-yl]-5-(4-chloro-3-methylphenyl)-1-(4-methylbenzyl)-pyrazole-3-carboxamide (SR144528) (1 μM), or pertussis toxin (5 μg/ml) did not alter the inhibitory effect of anandamide, suggesting that known cannabinoid receptors …